./Ultimate.py --spec ../../sv-benchmarks/c/properties/unreach-call.prp --file ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c --full-output --architecture 32bit -------------------------------------------------------------------------------- Checking for ERROR reachability Using default analysis Version 53f42b1a Calling Ultimate with: /usr/bin/java -Dosgi.configuration.area=/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/data/config -Xmx15G -Xms4m -jar /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/plugins/org.eclipse.equinox.launcher_1.5.800.v20200727-1323.jar -data @noDefault -ultimatedata /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/data -tc /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/config/AutomizerReach.xml -i ../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c -s /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf --cacsl2boogietranslator.entry.function main --witnessprinter.witness.directory /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF --witnessprinter.witness.filename witness.graphml --witnessprinter.write.witness.besides.input.file false --witnessprinter.graph.data.specification CHECK( init(main()), LTL(G ! call(reach_error())) ) --witnessprinter.graph.data.producer Automizer --witnessprinter.graph.data.architecture 32bit --witnessprinter.graph.data.programhash 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 --- Real Ultimate output --- This is Ultimate 0.2.1-dev-53f42b1 [2021-11-20 07:21:31,530 INFO L177 SettingsManager]: Resetting all preferences to default values... [2021-11-20 07:21:31,532 INFO L181 SettingsManager]: Resetting UltimateCore preferences to default values [2021-11-20 07:21:31,581 INFO L184 SettingsManager]: Ultimate Commandline Interface provides no preferences, ignoring... [2021-11-20 07:21:31,582 INFO L181 SettingsManager]: Resetting Boogie Preprocessor preferences to default values [2021-11-20 07:21:31,583 INFO L181 SettingsManager]: Resetting Boogie Procedure Inliner preferences to default values [2021-11-20 07:21:31,585 INFO L181 SettingsManager]: Resetting Abstract Interpretation preferences to default values [2021-11-20 07:21:31,587 INFO L181 SettingsManager]: Resetting LassoRanker preferences to default values [2021-11-20 07:21:31,589 INFO L181 SettingsManager]: Resetting Reaching Definitions preferences to default values [2021-11-20 07:21:31,591 INFO L181 SettingsManager]: Resetting SyntaxChecker preferences to default values [2021-11-20 07:21:31,592 INFO L181 SettingsManager]: Resetting Sifa preferences to default values [2021-11-20 07:21:31,593 INFO L184 SettingsManager]: Büchi Program Product provides no preferences, ignoring... [2021-11-20 07:21:31,594 INFO L181 SettingsManager]: Resetting LTL2Aut preferences to default values [2021-11-20 07:21:31,595 INFO L181 SettingsManager]: Resetting PEA to Boogie preferences to default values [2021-11-20 07:21:31,597 INFO L181 SettingsManager]: Resetting BlockEncodingV2 preferences to default values [2021-11-20 07:21:31,600 INFO L181 SettingsManager]: Resetting ChcToBoogie preferences to default values [2021-11-20 07:21:31,601 INFO L181 SettingsManager]: Resetting AutomataScriptInterpreter preferences to default values [2021-11-20 07:21:31,603 INFO L181 SettingsManager]: Resetting BuchiAutomizer preferences to default values [2021-11-20 07:21:31,605 INFO L181 SettingsManager]: Resetting CACSL2BoogieTranslator preferences to default values [2021-11-20 07:21:31,608 INFO L181 SettingsManager]: Resetting CodeCheck preferences to default values [2021-11-20 07:21:31,618 INFO L181 SettingsManager]: Resetting InvariantSynthesis preferences to default values [2021-11-20 07:21:31,624 INFO L181 SettingsManager]: Resetting RCFGBuilder preferences to default values [2021-11-20 07:21:31,626 INFO L181 SettingsManager]: Resetting Referee preferences to default values [2021-11-20 07:21:31,627 INFO L181 SettingsManager]: Resetting TraceAbstraction preferences to default values [2021-11-20 07:21:31,631 INFO L184 SettingsManager]: TraceAbstractionConcurrent provides no preferences, ignoring... [2021-11-20 07:21:31,631 INFO L184 SettingsManager]: TraceAbstractionWithAFAs provides no preferences, ignoring... [2021-11-20 07:21:31,632 INFO L181 SettingsManager]: Resetting TreeAutomizer preferences to default values [2021-11-20 07:21:31,633 INFO L181 SettingsManager]: Resetting IcfgToChc preferences to default values [2021-11-20 07:21:31,638 INFO L181 SettingsManager]: Resetting IcfgTransformer preferences to default values [2021-11-20 07:21:31,639 INFO L184 SettingsManager]: ReqToTest provides no preferences, ignoring... [2021-11-20 07:21:31,640 INFO L181 SettingsManager]: Resetting Boogie Printer preferences to default values [2021-11-20 07:21:31,641 INFO L181 SettingsManager]: Resetting ChcSmtPrinter preferences to default values [2021-11-20 07:21:31,643 INFO L181 SettingsManager]: Resetting ReqPrinter preferences to default values [2021-11-20 07:21:31,645 INFO L181 SettingsManager]: Resetting Witness Printer preferences to default values [2021-11-20 07:21:31,647 INFO L184 SettingsManager]: Boogie PL CUP Parser provides no preferences, ignoring... [2021-11-20 07:21:31,647 INFO L181 SettingsManager]: Resetting CDTParser preferences to default values [2021-11-20 07:21:31,648 INFO L184 SettingsManager]: AutomataScriptParser provides no preferences, ignoring... [2021-11-20 07:21:31,649 INFO L184 SettingsManager]: ReqParser provides no preferences, ignoring... [2021-11-20 07:21:31,649 INFO L181 SettingsManager]: Resetting SmtParser preferences to default values [2021-11-20 07:21:31,650 INFO L181 SettingsManager]: Resetting Witness Parser preferences to default values [2021-11-20 07:21:31,651 INFO L188 SettingsManager]: Finished resetting all preferences to default values... [2021-11-20 07:21:31,652 INFO L101 SettingsManager]: Beginning loading settings from /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/config/svcomp-Reach-32bit-Automizer_Default.epf [2021-11-20 07:21:31,701 INFO L113 SettingsManager]: Loading preferences was successful [2021-11-20 07:21:31,701 INFO L115 SettingsManager]: Preferences different from defaults after loading the file: [2021-11-20 07:21:31,702 INFO L136 SettingsManager]: Preferences of UltimateCore differ from their defaults: [2021-11-20 07:21:31,702 INFO L138 SettingsManager]: * Log level for class=de.uni_freiburg.informatik.ultimate.lib.smtlibutils.quantifier.QuantifierPusher=ERROR; [2021-11-20 07:21:31,703 INFO L136 SettingsManager]: Preferences of Boogie Procedure Inliner differ from their defaults: [2021-11-20 07:21:31,703 INFO L138 SettingsManager]: * Ignore calls to procedures called more than once=ONLY_FOR_SEQUENTIAL_PROGRAMS [2021-11-20 07:21:31,704 INFO L136 SettingsManager]: Preferences of BlockEncodingV2 differ from their defaults: [2021-11-20 07:21:31,704 INFO L138 SettingsManager]: * Create parallel compositions if possible=false [2021-11-20 07:21:31,704 INFO L138 SettingsManager]: * Use SBE=true [2021-11-20 07:21:31,704 INFO L136 SettingsManager]: Preferences of CACSL2BoogieTranslator differ from their defaults: [2021-11-20 07:21:31,704 INFO L138 SettingsManager]: * sizeof long=4 [2021-11-20 07:21:31,705 INFO L138 SettingsManager]: * Overapproximate operations on floating types=true [2021-11-20 07:21:31,705 INFO L138 SettingsManager]: * sizeof POINTER=4 [2021-11-20 07:21:31,705 INFO L138 SettingsManager]: * Check division by zero=IGNORE [2021-11-20 07:21:31,711 INFO L138 SettingsManager]: * Pointer to allocated memory at dereference=IGNORE [2021-11-20 07:21:31,711 INFO L138 SettingsManager]: * If two pointers are subtracted or compared they have the same base address=IGNORE [2021-11-20 07:21:31,711 INFO L138 SettingsManager]: * Check array bounds for arrays that are off heap=IGNORE [2021-11-20 07:21:31,712 INFO L138 SettingsManager]: * sizeof long double=12 [2021-11-20 07:21:31,712 INFO L138 SettingsManager]: * Check if freed pointer was valid=false [2021-11-20 07:21:31,712 INFO L138 SettingsManager]: * Use constant arrays=true [2021-11-20 07:21:31,712 INFO L138 SettingsManager]: * Pointer base address is valid at dereference=IGNORE [2021-11-20 07:21:31,713 INFO L136 SettingsManager]: Preferences of RCFGBuilder differ from their defaults: [2021-11-20 07:21:31,713 INFO L138 SettingsManager]: * Size of a code block=SequenceOfStatements [2021-11-20 07:21:31,713 INFO L138 SettingsManager]: * SMT solver=External_DefaultMode [2021-11-20 07:21:31,713 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:21:31,714 INFO L136 SettingsManager]: Preferences of TraceAbstraction differ from their defaults: [2021-11-20 07:21:31,714 INFO L138 SettingsManager]: * Compute Interpolants along a Counterexample=FPandBP [2021-11-20 07:21:31,714 INFO L138 SettingsManager]: * Positions where we compute the Hoare Annotation=LoopsAndPotentialCycles [2021-11-20 07:21:31,715 INFO L138 SettingsManager]: * Trace refinement strategy=CAMEL [2021-11-20 07:21:31,716 INFO L138 SettingsManager]: * Command for external solver=z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in [2021-11-20 07:21:31,716 INFO L138 SettingsManager]: * Large block encoding in concurrent analysis=OFF [2021-11-20 07:21:31,717 INFO L138 SettingsManager]: * Automaton type used in concurrency analysis=PETRI_NET [2021-11-20 07:21:31,717 INFO L138 SettingsManager]: * Compute Hoare Annotation of negated interpolant automaton, abstraction and CFG=true [2021-11-20 07:21:31,717 INFO L138 SettingsManager]: * Trace refinement exception blacklist=NONE [2021-11-20 07:21:31,717 INFO L138 SettingsManager]: * SMT solver=External_ModelsAndUnsatCoreMode WARNING: An illegal reflective access operation has occurred WARNING: Illegal reflective access by com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 (file:/tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/plugins/com.sun.xml.bind_2.2.0.v201505121915.jar) to method java.lang.ClassLoader.defineClass(java.lang.String,byte[],int,int) WARNING: Please consider reporting this to the maintainers of com.sun.xml.bind.v2.runtime.reflect.opt.Injector$1 WARNING: Use --illegal-access=warn to enable warnings of further illegal reflective access operations WARNING: All illegal access operations will be denied in a future release Applying setting for plugin de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator: Entry function -> main Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness directory -> /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Witness filename -> witness.graphml Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Write witness besides input file -> false Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data specification -> CHECK( init(main()), LTL(G ! call(reach_error())) ) Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data producer -> Automizer Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data architecture -> 32bit Applying setting for plugin de.uni_freiburg.informatik.ultimate.witnessprinter: Graph data programhash -> 22315e954f625a92454f179210263631b555d33fa4f07d11e85c64617a347172 [2021-11-20 07:21:31,964 INFO L75 nceAwareModelManager]: Repository-Root is: /tmp [2021-11-20 07:21:31,989 INFO L261 ainManager$Toolchain]: [Toolchain 1]: Applicable parser(s) successfully (re)initialized [2021-11-20 07:21:31,992 INFO L217 ainManager$Toolchain]: [Toolchain 1]: Toolchain selected. [2021-11-20 07:21:31,994 INFO L271 PluginConnector]: Initializing CDTParser... [2021-11-20 07:21:31,995 INFO L275 PluginConnector]: CDTParser initialized [2021-11-20 07:21:31,997 INFO L432 ainManager$Toolchain]: [Toolchain 1]: Parsing single file: /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/../../sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2021-11-20 07:21:32,098 INFO L220 CDTParser]: Created temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/data/b0c5b1512/8c3eb3a0431d4892b2f0b977bea4826e/FLAG0b4462782 [2021-11-20 07:21:33,113 INFO L306 CDTParser]: Found 1 translation units. [2021-11-20 07:21:33,114 INFO L160 CDTParser]: Scanning /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c [2021-11-20 07:21:33,171 INFO L349 CDTParser]: About to delete temporary CDT project at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/data/b0c5b1512/8c3eb3a0431d4892b2f0b977bea4826e/FLAG0b4462782 [2021-11-20 07:21:33,453 INFO L357 CDTParser]: Successfully deleted /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/data/b0c5b1512/8c3eb3a0431d4892b2f0b977bea4826e [2021-11-20 07:21:33,456 INFO L299 ainManager$Toolchain]: ####################### [Toolchain 1] ####################### [2021-11-20 07:21:33,459 INFO L131 ToolchainWalker]: Walking toolchain with 6 elements. [2021-11-20 07:21:33,460 INFO L113 PluginConnector]: ------------------------CACSL2BoogieTranslator---------------------------- [2021-11-20 07:21:33,460 INFO L271 PluginConnector]: Initializing CACSL2BoogieTranslator... [2021-11-20 07:21:33,464 INFO L275 PluginConnector]: CACSL2BoogieTranslator initialized [2021-11-20 07:21:33,465 INFO L185 PluginConnector]: Executing the observer ACSLObjectContainerObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:21:33" (1/1) ... [2021-11-20 07:21:33,466 INFO L205 PluginConnector]: Invalid model from CACSL2BoogieTranslator for observer de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator.ACSLObjectContainerObserver@1e396933 and model type de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:33, skipping insertion in model container [2021-11-20 07:21:33,466 INFO L185 PluginConnector]: Executing the observer CACSL2BoogieTranslatorObserver from plugin CACSL2BoogieTranslator for "CDTParser AST 20.11 07:21:33" (1/1) ... [2021-11-20 07:21:33,474 INFO L145 MainTranslator]: Starting translation in SV-COMP mode [2021-11-20 07:21:33,722 INFO L178 MainTranslator]: Built tables and reachable declarations [2021-11-20 07:21:36,049 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2021-11-20 07:21:36,082 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2021-11-20 07:21:36,334 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:21:36,344 INFO L203 MainTranslator]: Completed pre-run [2021-11-20 07:21:37,564 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[380593,380606] [2021-11-20 07:21:37,570 WARN L230 ndardFunctionHandler]: Function reach_error is already implemented but we override the implementation for the call at /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/sv-benchmarks/c/combinations/Problem05_label49+token_ring.05.cil-2.c[383339,383352] [2021-11-20 07:21:37,583 INFO L209 PostProcessor]: Analyzing one entry point: main [2021-11-20 07:21:37,663 INFO L208 MainTranslator]: Completed translation [2021-11-20 07:21:37,664 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37 WrapperNode [2021-11-20 07:21:37,664 INFO L132 PluginConnector]: ------------------------ END CACSL2BoogieTranslator---------------------------- [2021-11-20 07:21:37,665 INFO L113 PluginConnector]: ------------------------Boogie Procedure Inliner---------------------------- [2021-11-20 07:21:37,666 INFO L271 PluginConnector]: Initializing Boogie Procedure Inliner... [2021-11-20 07:21:37,666 INFO L275 PluginConnector]: Boogie Procedure Inliner initialized [2021-11-20 07:21:37,673 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:37,774 INFO L185 PluginConnector]: Executing the observer Inliner from plugin Boogie Procedure Inliner for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:38,290 INFO L137 Inliner]: procedures = 54, calls = 57, calls flagged for inlining = 31, calls inlined = 31, statements flattened = 12798 [2021-11-20 07:21:38,291 INFO L132 PluginConnector]: ------------------------ END Boogie Procedure Inliner---------------------------- [2021-11-20 07:21:38,291 INFO L113 PluginConnector]: ------------------------Boogie Preprocessor---------------------------- [2021-11-20 07:21:38,292 INFO L271 PluginConnector]: Initializing Boogie Preprocessor... [2021-11-20 07:21:38,292 INFO L275 PluginConnector]: Boogie Preprocessor initialized [2021-11-20 07:21:38,302 INFO L185 PluginConnector]: Executing the observer EnsureBoogieModelObserver from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:38,302 INFO L185 PluginConnector]: Executing the observer TypeChecker from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:38,420 INFO L185 PluginConnector]: Executing the observer ConstExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:38,421 INFO L185 PluginConnector]: Executing the observer StructExpander from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:38,865 INFO L185 PluginConnector]: Executing the observer UnstructureCode from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:38,923 INFO L185 PluginConnector]: Executing the observer FunctionInliner from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:38,953 INFO L185 PluginConnector]: Executing the observer BoogieSymbolTableConstructor from plugin Boogie Preprocessor for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:39,023 INFO L132 PluginConnector]: ------------------------ END Boogie Preprocessor---------------------------- [2021-11-20 07:21:39,024 INFO L113 PluginConnector]: ------------------------RCFGBuilder---------------------------- [2021-11-20 07:21:39,024 INFO L271 PluginConnector]: Initializing RCFGBuilder... [2021-11-20 07:21:39,024 INFO L275 PluginConnector]: RCFGBuilder initialized [2021-11-20 07:21:39,027 INFO L185 PluginConnector]: Executing the observer RCFGBuilderObserver from plugin RCFGBuilder for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (1/1) ... [2021-11-20 07:21:39,035 INFO L168 SolverBuilder]: Constructing external solver with command: z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 [2021-11-20 07:21:39,047 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:21:39,063 INFO L229 MonitoredProcess]: Starting monitored process 1 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (exit command is (exit), workingDir is null) [2021-11-20 07:21:39,094 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 SMTLIB2_COMPLIANT=true -memory:2024 -smt2 -in -t:2000 (1)] Waiting until timeout for monitored process [2021-11-20 07:21:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure #Ultimate.allocInit [2021-11-20 07:21:39,110 INFO L130 BoogieDeclarations]: Found specification of procedure activate_threads [2021-11-20 07:21:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure activate_threads [2021-11-20 07:21:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure immediate_notify [2021-11-20 07:21:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure immediate_notify [2021-11-20 07:21:39,111 INFO L130 BoogieDeclarations]: Found specification of procedure update_channels [2021-11-20 07:21:39,111 INFO L138 BoogieDeclarations]: Found implementation of procedure update_channels [2021-11-20 07:21:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure error [2021-11-20 07:21:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure error [2021-11-20 07:21:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure fire_delta_events [2021-11-20 07:21:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure fire_delta_events [2021-11-20 07:21:39,112 INFO L130 BoogieDeclarations]: Found specification of procedure exists_runnable_thread [2021-11-20 07:21:39,112 INFO L138 BoogieDeclarations]: Found implementation of procedure exists_runnable_thread [2021-11-20 07:21:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure reset_delta_events [2021-11-20 07:21:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure reset_delta_events [2021-11-20 07:21:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure write~init~int [2021-11-20 07:21:39,113 INFO L130 BoogieDeclarations]: Found specification of procedure ULTIMATE.start [2021-11-20 07:21:39,113 INFO L138 BoogieDeclarations]: Found implementation of procedure ULTIMATE.start [2021-11-20 07:21:39,297 INFO L236 CfgBuilder]: Building ICFG [2021-11-20 07:21:39,298 INFO L262 CfgBuilder]: Building CFG for each procedure with an implementation [2021-11-20 07:21:46,700 INFO L277 CfgBuilder]: Performing block encoding [2021-11-20 07:21:46,738 INFO L296 CfgBuilder]: Using the 1 location(s) as analysis (start of procedure ULTIMATE.start) [2021-11-20 07:21:46,738 INFO L301 CfgBuilder]: Removed 9 assume(true) statements. [2021-11-20 07:21:46,745 INFO L202 PluginConnector]: Adding new model de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:21:46 BoogieIcfgContainer [2021-11-20 07:21:46,745 INFO L132 PluginConnector]: ------------------------ END RCFGBuilder---------------------------- [2021-11-20 07:21:46,747 INFO L113 PluginConnector]: ------------------------TraceAbstraction---------------------------- [2021-11-20 07:21:46,748 INFO L271 PluginConnector]: Initializing TraceAbstraction... [2021-11-20 07:21:46,751 INFO L275 PluginConnector]: TraceAbstraction initialized [2021-11-20 07:21:46,751 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "CDTParser AST 20.11 07:21:33" (1/3) ... [2021-11-20 07:21:46,752 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f83f8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:21:46, skipping insertion in model container [2021-11-20 07:21:46,752 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.cacsl2boogietranslator AST 20.11 07:21:37" (2/3) ... [2021-11-20 07:21:46,753 INFO L205 PluginConnector]: Invalid model from TraceAbstraction for observer de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction.TraceAbstractionObserver@f83f8bf and model type de.uni_freiburg.informatik.ultimate.plugins.generator.traceabstraction AST 20.11 07:21:46, skipping insertion in model container [2021-11-20 07:21:46,753 INFO L185 PluginConnector]: Executing the observer TraceAbstractionObserver from plugin TraceAbstraction for "de.uni_freiburg.informatik.ultimate.plugins.generator.rcfgbuilder CFG 20.11 07:21:46" (3/3) ... [2021-11-20 07:21:46,754 INFO L111 eAbstractionObserver]: Analyzing ICFG Problem05_label49+token_ring.05.cil-2.c [2021-11-20 07:21:46,763 INFO L204 ceAbstractionStarter]: Automizer settings: Hoare:true NWA Interpolation:FPandBP Determinization: PREDICATE_ABSTRACTION [2021-11-20 07:21:46,763 INFO L163 ceAbstractionStarter]: Applying trace abstraction to program that has 2 error locations. [2021-11-20 07:21:46,835 INFO L338 AbstractCegarLoop]: ======== Iteration 0 == of CEGAR loop == AllErrorsAtOnce ======== [2021-11-20 07:21:46,846 INFO L339 AbstractCegarLoop]: Settings: SEPARATE_VIOLATION_CHECK=true, mInterprocedural=true, mMaxIterations=1000000, mWatchIteration=1000000, mArtifact=RCFG, mInterpolation=FPandBP, mInterpolantAutomaton=STRAIGHT_LINE, mDumpAutomata=false, mAutomataFormat=ATS_NUMERATE, mDumpPath=., mDeterminiation=PREDICATE_ABSTRACTION, mMinimize=MINIMIZE_SEVPA, mHoare=true, mAutomataTypeConcurrency=PETRI_NET, mHoareTripleChecks=INCREMENTAL, mHoareAnnotationPositions=LoopsAndPotentialCycles, mDumpOnlyReuseAutomata=false, mLimitTraceHistogram=0, mErrorLocTimeLimit=0, mLimitPathProgramCount=0, mCollectInterpolantStatistics=true, mHeuristicEmptinessCheck=false, mHeuristicEmptinessCheckAStarHeuristic=ZERO, mHeuristicEmptinessCheckAStarHeuristicRandomSeed=1337, mHeuristicEmptinessCheckSmtFeatureScoringMethod=DAGSIZE, mSMTFeatureExtraction=false, mSMTFeatureExtractionDumpPath=., mOverrideInterpolantAutomaton=false, mMcrInterpolantMethod=WP, mLoopAccelerationTechnique=FAST_UPR [2021-11-20 07:21:46,847 INFO L340 AbstractCegarLoop]: Starting to check reachability of 2 error locations. [2021-11-20 07:21:46,941 INFO L276 IsEmpty]: Start isEmpty. Operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) [2021-11-20 07:21:46,954 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:21:46,954 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:46,955 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:46,956 INFO L402 AbstractCegarLoop]: === Iteration 1 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:46,961 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:46,961 INFO L85 PathProgramCache]: Analyzing trace with hash -645844934, now seen corresponding path program 1 times [2021-11-20 07:21:46,968 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:46,969 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1594385216] [2021-11-20 07:21:46,969 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:46,970 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:47,073 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:47,163 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:21:47,166 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:47,213 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:21:47,232 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:47,272 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:21:47,288 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:47,345 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:21:47,353 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:47,379 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:21:47,398 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:47,408 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:47,409 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:47,409 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1594385216] [2021-11-20 07:21:47,412 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1594385216] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:47,412 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:47,412 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [5] imperfect sequences [] total 5 [2021-11-20 07:21:47,414 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1184555436] [2021-11-20 07:21:47,415 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:47,421 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 5 states [2021-11-20 07:21:47,423 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:47,446 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 5 interpolants. [2021-11-20 07:21:47,447 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=7, Invalid=13, Unknown=0, NotChecked=0, Total=20 [2021-11-20 07:21:47,456 INFO L87 Difference]: Start difference. First operand has 2398 states, 2367 states have (on average 1.85297845373891) internal successors, (4386), 2372 states have internal predecessors, (4386), 21 states have call successors, (21), 7 states have call predecessors, (21), 7 states have return successors, (21), 20 states have call predecessors, (21), 21 states have call successors, (21) Second operand has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:48,493 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:48,494 INFO L93 Difference]: Finished difference Result 4852 states and 8953 transitions. [2021-11-20 07:21:48,495 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 6 states. [2021-11-20 07:21:48,497 INFO L78 Accepts]: Start accepts. Automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:21:48,497 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:48,533 INFO L225 Difference]: With dead ends: 4852 [2021-11-20 07:21:48,533 INFO L226 Difference]: Without dead ends: 2395 [2021-11-20 07:21:48,545 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 19 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 3 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=22, Invalid=34, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:21:48,551 INFO L933 BasicCegarLoop]: 4373 mSDtfsCounter, 521 mSDsluCounter, 12314 mSDsCounter, 0 mSdLazyCounter, 339 mSolverCounterSat, 50 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 538 SdHoareTripleChecker+Valid, 16687 SdHoareTripleChecker+Invalid, 389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 50 IncrementalHoareTripleChecker+Valid, 339 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:48,553 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [538 Valid, 16687 Invalid, 389 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [50 Valid, 339 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 07:21:48,576 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2395 states. [2021-11-20 07:21:48,687 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2395 to 2330. [2021-11-20 07:21:48,695 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2330 states, 2301 states have (on average 1.841373315949587) internal successors, (4237), 2304 states have internal predecessors, (4237), 21 states have call successors, (21), 7 states have call predecessors, (21), 6 states have return successors, (19), 19 states have call predecessors, (19), 19 states have call successors, (19) [2021-11-20 07:21:48,711 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2330 states to 2330 states and 4277 transitions. [2021-11-20 07:21:48,713 INFO L78 Accepts]: Start accepts. Automaton has 2330 states and 4277 transitions. Word has length 102 [2021-11-20 07:21:48,713 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:48,714 INFO L470 AbstractCegarLoop]: Abstraction has 2330 states and 4277 transitions. [2021-11-20 07:21:48,714 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 5 states, 5 states have (on average 18.2) internal successors, (91), 3 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 1 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:48,714 INFO L276 IsEmpty]: Start isEmpty. Operand 2330 states and 4277 transitions. [2021-11-20 07:21:48,718 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:21:48,718 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:48,719 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:48,719 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable0 [2021-11-20 07:21:48,719 INFO L402 AbstractCegarLoop]: === Iteration 2 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:48,720 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:48,720 INFO L85 PathProgramCache]: Analyzing trace with hash 1294737080, now seen corresponding path program 1 times [2021-11-20 07:21:48,721 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:48,721 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [869999881] [2021-11-20 07:21:48,721 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:48,722 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:48,767 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,823 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:21:48,825 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,852 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:21:48,865 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,935 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:21:48,943 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,975 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:21:48,984 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:48,996 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:21:48,998 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:49,002 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:49,002 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:49,003 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [869999881] [2021-11-20 07:21:49,003 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [869999881] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:49,003 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:49,004 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:21:49,004 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [721001594] [2021-11-20 07:21:49,004 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:49,006 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:21:49,006 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:49,007 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:21:49,007 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:21:49,007 INFO L87 Difference]: Start difference. First operand 2330 states and 4277 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:50,804 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:50,805 INFO L93 Difference]: Finished difference Result 2856 states and 5108 transitions. [2021-11-20 07:21:50,805 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:21:50,806 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:21:50,806 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:50,829 INFO L225 Difference]: With dead ends: 2856 [2021-11-20 07:21:50,829 INFO L226 Difference]: Without dead ends: 2660 [2021-11-20 07:21:50,835 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 10 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=33, Invalid=77, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:21:50,838 INFO L933 BasicCegarLoop]: 4328 mSDtfsCounter, 4721 mSDsluCounter, 12456 mSDsCounter, 0 mSdLazyCounter, 956 mSolverCounterSat, 96 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4733 SdHoareTripleChecker+Valid, 16784 SdHoareTripleChecker+Invalid, 1052 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 96 IncrementalHoareTripleChecker+Valid, 956 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:50,838 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4733 Valid, 16784 Invalid, 1052 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [96 Valid, 956 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 07:21:50,847 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2660 states. [2021-11-20 07:21:50,933 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2660 to 2529. [2021-11-20 07:21:50,940 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8217022993142395) internal successors, (4516), 2483 states have internal predecessors, (4516), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-11-20 07:21:50,961 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4587 transitions. [2021-11-20 07:21:50,961 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4587 transitions. Word has length 102 [2021-11-20 07:21:50,962 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:50,962 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 4587 transitions. [2021-11-20 07:21:50,963 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:50,963 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4587 transitions. [2021-11-20 07:21:50,970 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:21:50,971 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:50,972 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:50,972 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable1 [2021-11-20 07:21:50,972 INFO L402 AbstractCegarLoop]: === Iteration 3 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:50,973 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:50,973 INFO L85 PathProgramCache]: Analyzing trace with hash -389078092, now seen corresponding path program 1 times [2021-11-20 07:21:50,973 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:50,974 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1660590554] [2021-11-20 07:21:50,974 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:50,975 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:51,009 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,065 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:21:51,067 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:21:51,094 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,135 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:21:51,145 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,174 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:21:51,178 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,186 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:21:51,189 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:51,192 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:51,192 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:51,193 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1660590554] [2021-11-20 07:21:51,195 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1660590554] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:51,195 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:51,195 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:21:51,195 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1316342635] [2021-11-20 07:21:51,196 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:51,197 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:21:51,198 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:51,198 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:21:51,199 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:51,200 INFO L87 Difference]: Start difference. First operand 2529 states and 4587 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:52,222 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:52,223 INFO L93 Difference]: Finished difference Result 3061 states and 5432 transitions. [2021-11-20 07:21:52,223 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:21:52,224 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:21:52,224 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:52,242 INFO L225 Difference]: With dead ends: 3061 [2021-11-20 07:21:52,242 INFO L226 Difference]: Without dead ends: 2666 [2021-11-20 07:21:52,250 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:21:52,255 INFO L933 BasicCegarLoop]: 4285 mSDtfsCounter, 4601 mSDsluCounter, 12283 mSDsCounter, 0 mSdLazyCounter, 660 mSolverCounterSat, 91 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4614 SdHoareTripleChecker+Valid, 16568 SdHoareTripleChecker+Invalid, 751 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 91 IncrementalHoareTripleChecker+Valid, 660 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:52,256 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4614 Valid, 16568 Invalid, 751 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [91 Valid, 660 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:21:52,263 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2666 states. [2021-11-20 07:21:52,354 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2666 to 2529. [2021-11-20 07:21:52,361 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2529 states, 2479 states have (on average 1.8208955223880596) internal successors, (4514), 2483 states have internal predecessors, (4514), 35 states have call successors, (35), 13 states have call predecessors, (35), 13 states have return successors, (36), 33 states have call predecessors, (36), 33 states have call successors, (36) [2021-11-20 07:21:52,380 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2529 states to 2529 states and 4585 transitions. [2021-11-20 07:21:52,380 INFO L78 Accepts]: Start accepts. Automaton has 2529 states and 4585 transitions. Word has length 102 [2021-11-20 07:21:52,382 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:52,382 INFO L470 AbstractCegarLoop]: Abstraction has 2529 states and 4585 transitions. [2021-11-20 07:21:52,383 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:52,383 INFO L276 IsEmpty]: Start isEmpty. Operand 2529 states and 4585 transitions. [2021-11-20 07:21:52,385 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:21:52,385 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:52,385 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:52,385 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable2 [2021-11-20 07:21:52,386 INFO L402 AbstractCegarLoop]: === Iteration 4 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:52,386 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:52,387 INFO L85 PathProgramCache]: Analyzing trace with hash 1487404726, now seen corresponding path program 1 times [2021-11-20 07:21:52,387 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:52,387 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1225131665] [2021-11-20 07:21:52,387 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:52,388 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:52,405 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,447 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:21:52,450 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,477 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:21:52,481 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,526 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:21:52,530 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,538 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:21:52,541 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,545 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:21:52,546 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:52,549 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:52,549 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:52,550 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1225131665] [2021-11-20 07:21:52,550 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1225131665] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:52,550 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:52,550 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:21:52,551 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1916841171] [2021-11-20 07:21:52,551 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:52,551 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:21:52,552 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:52,552 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:21:52,552 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:52,553 INFO L87 Difference]: Start difference. First operand 2529 states and 4585 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:54,460 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:54,461 INFO L93 Difference]: Finished difference Result 3321 states and 5829 transitions. [2021-11-20 07:21:54,461 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:21:54,462 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:21:54,462 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:54,480 INFO L225 Difference]: With dead ends: 3321 [2021-11-20 07:21:54,480 INFO L226 Difference]: Without dead ends: 2926 [2021-11-20 07:21:54,483 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:21:54,484 INFO L933 BasicCegarLoop]: 4475 mSDtfsCounter, 4718 mSDsluCounter, 16937 mSDsCounter, 0 mSdLazyCounter, 1488 mSolverCounterSat, 73 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4730 SdHoareTripleChecker+Valid, 21412 SdHoareTripleChecker+Invalid, 1561 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 73 IncrementalHoareTripleChecker+Valid, 1488 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.4s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:54,485 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4730 Valid, 21412 Invalid, 1561 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [73 Valid, 1488 Invalid, 0 Unknown, 0 Unchecked, 1.4s Time] [2021-11-20 07:21:54,490 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 2926 states. [2021-11-20 07:21:54,569 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 2926 to 2716. [2021-11-20 07:21:54,576 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 2716 states, 2645 states have (on average 1.8026465028355387) internal successors, (4768), 2650 states have internal predecessors, (4768), 49 states have call successors, (49), 19 states have call predecessors, (49), 20 states have return successors, (52), 48 states have call predecessors, (52), 47 states have call successors, (52) [2021-11-20 07:21:54,589 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 2716 states to 2716 states and 4869 transitions. [2021-11-20 07:21:54,589 INFO L78 Accepts]: Start accepts. Automaton has 2716 states and 4869 transitions. Word has length 102 [2021-11-20 07:21:54,590 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:54,590 INFO L470 AbstractCegarLoop]: Abstraction has 2716 states and 4869 transitions. [2021-11-20 07:21:54,590 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:54,590 INFO L276 IsEmpty]: Start isEmpty. Operand 2716 states and 4869 transitions. [2021-11-20 07:21:54,592 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:21:54,592 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:54,593 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:54,593 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable3 [2021-11-20 07:21:54,593 INFO L402 AbstractCegarLoop]: === Iteration 5 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:54,593 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:54,594 INFO L85 PathProgramCache]: Analyzing trace with hash -1482706376, now seen corresponding path program 1 times [2021-11-20 07:21:54,594 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:54,594 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [604145591] [2021-11-20 07:21:54,594 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:54,595 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:54,603 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,621 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:21:54,623 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,641 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:21:54,644 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,674 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:21:54,678 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,694 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:21:54,697 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,702 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:21:54,705 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:54,708 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:54,708 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:54,708 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [604145591] [2021-11-20 07:21:54,708 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [604145591] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:54,710 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:54,710 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:21:54,710 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [754607282] [2021-11-20 07:21:54,711 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:54,711 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:21:54,711 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:54,712 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:21:54,712 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:54,712 INFO L87 Difference]: Start difference. First operand 2716 states and 4869 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:56,425 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:56,425 INFO L93 Difference]: Finished difference Result 4006 states and 6889 transitions. [2021-11-20 07:21:56,426 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 14 states. [2021-11-20 07:21:56,427 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:21:56,428 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:56,458 INFO L225 Difference]: With dead ends: 4006 [2021-11-20 07:21:56,458 INFO L226 Difference]: Without dead ends: 3424 [2021-11-20 07:21:56,463 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 27 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 14 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 37 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=66, Invalid=174, Unknown=0, NotChecked=0, Total=240 [2021-11-20 07:21:56,464 INFO L933 BasicCegarLoop]: 4468 mSDtfsCounter, 4714 mSDsluCounter, 16933 mSDsCounter, 0 mSdLazyCounter, 1472 mSolverCounterSat, 74 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4726 SdHoareTripleChecker+Valid, 21401 SdHoareTripleChecker+Invalid, 1546 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.1s SdHoareTripleChecker+Time, 74 IncrementalHoareTripleChecker+Valid, 1472 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:56,465 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4726 Valid, 21401 Invalid, 1546 Unknown, 0 Unchecked, 0.1s Time], IncrementalHoareTripleChecker [74 Valid, 1472 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:21:56,473 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3424 states. [2021-11-20 07:21:56,623 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3424 to 3093. [2021-11-20 07:21:56,631 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2980 states have (on average 1.7721476510067113) internal successors, (5281), 2987 states have internal predecessors, (5281), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-11-20 07:21:56,642 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 5446 transitions. [2021-11-20 07:21:56,644 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 5446 transitions. Word has length 102 [2021-11-20 07:21:56,645 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:56,645 INFO L470 AbstractCegarLoop]: Abstraction has 3093 states and 5446 transitions. [2021-11-20 07:21:56,645 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:56,646 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 5446 transitions. [2021-11-20 07:21:56,648 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:21:56,648 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:56,648 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:56,648 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable4 [2021-11-20 07:21:56,649 INFO L402 AbstractCegarLoop]: === Iteration 6 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:56,651 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:56,651 INFO L85 PathProgramCache]: Analyzing trace with hash 84051574, now seen corresponding path program 1 times [2021-11-20 07:21:56,651 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:56,651 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1539090192] [2021-11-20 07:21:56,652 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:56,652 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:56,663 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:56,689 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:21:56,690 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:56,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:21:56,716 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:56,757 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:21:56,762 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:56,769 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:21:56,771 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:56,774 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:21:56,776 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:56,778 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:56,778 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:56,779 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1539090192] [2021-11-20 07:21:56,779 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1539090192] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:56,779 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:56,779 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:21:56,779 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [293311095] [2021-11-20 07:21:56,780 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:56,780 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:21:56,780 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:56,781 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:21:56,781 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:56,781 INFO L87 Difference]: Start difference. First operand 3093 states and 5446 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:57,712 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:57,712 INFO L93 Difference]: Finished difference Result 4371 states and 7455 transitions. [2021-11-20 07:21:57,712 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:21:57,713 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:21:57,713 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:57,736 INFO L225 Difference]: With dead ends: 4371 [2021-11-20 07:21:57,737 INFO L226 Difference]: Without dead ends: 3412 [2021-11-20 07:21:57,741 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 21 GetRequests, 12 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:21:57,742 INFO L933 BasicCegarLoop]: 4272 mSDtfsCounter, 4598 mSDsluCounter, 12282 mSDsCounter, 0 mSdLazyCounter, 631 mSolverCounterSat, 94 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.6s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4611 SdHoareTripleChecker+Valid, 16554 SdHoareTripleChecker+Invalid, 725 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 94 IncrementalHoareTripleChecker+Valid, 631 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.7s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:57,745 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4611 Valid, 16554 Invalid, 725 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [94 Valid, 631 Invalid, 0 Unknown, 0 Unchecked, 0.7s Time] [2021-11-20 07:21:57,751 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 3412 states. [2021-11-20 07:21:57,869 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 3412 to 3093. [2021-11-20 07:21:57,884 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3093 states, 2980 states have (on average 1.770469798657718) internal successors, (5276), 2987 states have internal predecessors, (5276), 77 states have call successors, (77), 31 states have call predecessors, (77), 34 states have return successors, (88), 78 states have call predecessors, (88), 75 states have call successors, (88) [2021-11-20 07:21:57,901 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3093 states to 3093 states and 5441 transitions. [2021-11-20 07:21:57,902 INFO L78 Accepts]: Start accepts. Automaton has 3093 states and 5441 transitions. Word has length 102 [2021-11-20 07:21:57,902 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:21:57,902 INFO L470 AbstractCegarLoop]: Abstraction has 3093 states and 5441 transitions. [2021-11-20 07:21:57,903 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:57,903 INFO L276 IsEmpty]: Start isEmpty. Operand 3093 states and 5441 transitions. [2021-11-20 07:21:57,905 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:21:57,905 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:21:57,906 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:21:57,906 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable5 [2021-11-20 07:21:57,906 INFO L402 AbstractCegarLoop]: === Iteration 7 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:21:57,907 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:21:57,907 INFO L85 PathProgramCache]: Analyzing trace with hash -973786504, now seen corresponding path program 1 times [2021-11-20 07:21:57,909 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:21:57,909 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [446711962] [2021-11-20 07:21:57,909 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:21:57,909 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:21:57,921 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:57,940 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:21:57,941 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:57,960 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:21:57,963 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:57,999 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:21:58,003 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:58,016 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:21:58,018 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:58,023 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:21:58,025 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:21:58,033 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:21:58,033 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:21:58,034 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [446711962] [2021-11-20 07:21:58,034 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [446711962] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:21:58,034 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:21:58,035 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:21:58,035 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1408372694] [2021-11-20 07:21:58,035 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:21:58,035 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:21:58,036 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:21:58,036 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:21:58,036 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:21:58,036 INFO L87 Difference]: Start difference. First operand 3093 states and 5441 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:21:59,792 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:21:59,792 INFO L93 Difference]: Finished difference Result 5649 states and 9388 transitions. [2021-11-20 07:21:59,792 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:21:59,793 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:21:59,793 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:21:59,833 INFO L225 Difference]: With dead ends: 5649 [2021-11-20 07:21:59,834 INFO L226 Difference]: Without dead ends: 4690 [2021-11-20 07:21:59,839 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 46 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:21:59,842 INFO L933 BasicCegarLoop]: 4322 mSDtfsCounter, 4966 mSDsluCounter, 16559 mSDsCounter, 0 mSdLazyCounter, 1280 mSolverCounterSat, 109 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4984 SdHoareTripleChecker+Valid, 20881 SdHoareTripleChecker+Invalid, 1389 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 109 IncrementalHoareTripleChecker+Valid, 1280 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.3s IncrementalHoareTripleChecker+Time [2021-11-20 07:21:59,842 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4984 Valid, 20881 Invalid, 1389 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [109 Valid, 1280 Invalid, 0 Unknown, 0 Unchecked, 1.3s Time] [2021-11-20 07:21:59,850 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 4690 states. [2021-11-20 07:22:00,011 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 4690 to 3843. [2021-11-20 07:22:00,016 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 3843 states, 3650 states have (on average 1.726027397260274) internal successors, (6300), 3661 states have internal predecessors, (6300), 129 states have call successors, (129), 55 states have call predecessors, (129), 62 states have return successors, (162), 134 states have call predecessors, (162), 127 states have call successors, (162) [2021-11-20 07:22:00,028 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 3843 states to 3843 states and 6591 transitions. [2021-11-20 07:22:00,029 INFO L78 Accepts]: Start accepts. Automaton has 3843 states and 6591 transitions. Word has length 102 [2021-11-20 07:22:00,029 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:00,030 INFO L470 AbstractCegarLoop]: Abstraction has 3843 states and 6591 transitions. [2021-11-20 07:22:00,030 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:00,030 INFO L276 IsEmpty]: Start isEmpty. Operand 3843 states and 6591 transitions. [2021-11-20 07:22:00,033 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:22:00,033 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:00,033 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:00,033 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable6 [2021-11-20 07:22:00,034 INFO L402 AbstractCegarLoop]: === Iteration 8 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:00,034 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:00,034 INFO L85 PathProgramCache]: Analyzing trace with hash -2116288970, now seen corresponding path program 1 times [2021-11-20 07:22:00,034 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:00,035 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1122192417] [2021-11-20 07:22:00,035 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:00,035 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:00,045 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:00,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:00,062 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:00,080 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:00,083 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:00,118 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:00,124 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:00,131 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:00,133 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:00,137 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:00,138 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:00,140 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:00,141 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:00,141 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1122192417] [2021-11-20 07:22:00,141 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1122192417] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:00,141 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:00,141 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:22:00,142 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1747160138] [2021-11-20 07:22:00,142 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:00,142 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:22:00,142 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:00,143 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:22:00,143 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:22:00,143 INFO L87 Difference]: Start difference. First operand 3843 states and 6591 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:02,154 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:02,154 INFO L93 Difference]: Finished difference Result 8501 states and 13780 transitions. [2021-11-20 07:22:02,154 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:22:02,155 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:22:02,155 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:02,184 INFO L225 Difference]: With dead ends: 8501 [2021-11-20 07:22:02,184 INFO L226 Difference]: Without dead ends: 6792 [2021-11-20 07:22:02,193 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:22:02,193 INFO L933 BasicCegarLoop]: 4525 mSDtfsCounter, 4747 mSDsluCounter, 16922 mSDsCounter, 0 mSdLazyCounter, 1663 mSolverCounterSat, 76 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.2s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4758 SdHoareTripleChecker+Valid, 21447 SdHoareTripleChecker+Invalid, 1739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 76 IncrementalHoareTripleChecker+Valid, 1663 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.5s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:02,194 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4758 Valid, 21447 Invalid, 1739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [76 Valid, 1663 Invalid, 0 Unknown, 0 Unchecked, 1.5s Time] [2021-11-20 07:22:02,203 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 6792 states. [2021-11-20 07:22:02,453 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 6792 to 5256. [2021-11-20 07:22:02,460 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 5256 states, 4907 states have (on average 1.6714897085795801) internal successors, (8202), 4926 states have internal predecessors, (8202), 229 states have call successors, (229), 103 states have call predecessors, (229), 118 states have return successors, (324), 242 states have call predecessors, (324), 227 states have call successors, (324) [2021-11-20 07:22:02,475 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 5256 states to 5256 states and 8755 transitions. [2021-11-20 07:22:02,475 INFO L78 Accepts]: Start accepts. Automaton has 5256 states and 8755 transitions. Word has length 102 [2021-11-20 07:22:02,476 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:02,476 INFO L470 AbstractCegarLoop]: Abstraction has 5256 states and 8755 transitions. [2021-11-20 07:22:02,476 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:02,476 INFO L276 IsEmpty]: Start isEmpty. Operand 5256 states and 8755 transitions. [2021-11-20 07:22:02,480 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:22:02,480 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:02,480 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:02,480 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable7 [2021-11-20 07:22:02,481 INFO L402 AbstractCegarLoop]: === Iteration 9 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:02,481 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:02,481 INFO L85 PathProgramCache]: Analyzing trace with hash -1876049224, now seen corresponding path program 1 times [2021-11-20 07:22:02,482 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:02,482 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664695898] [2021-11-20 07:22:02,482 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:02,482 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:02,490 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:02,510 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:02,511 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:02,529 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:02,534 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:02,568 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:02,571 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:02,577 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:02,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:02,582 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:02,584 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:02,586 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:02,586 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:02,586 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664695898] [2021-11-20 07:22:02,587 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664695898] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:02,587 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:02,587 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:22:02,587 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1713410391] [2021-11-20 07:22:02,587 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:02,588 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:22:02,588 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:02,588 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:22:02,589 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:22:02,589 INFO L87 Difference]: Start difference. First operand 5256 states and 8755 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:04,607 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:04,607 INFO L93 Difference]: Finished difference Result 13816 states and 21958 transitions. [2021-11-20 07:22:04,608 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:22:04,608 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:22:04,608 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:04,658 INFO L225 Difference]: With dead ends: 13816 [2021-11-20 07:22:04,658 INFO L226 Difference]: Without dead ends: 10694 [2021-11-20 07:22:04,674 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:22:04,674 INFO L933 BasicCegarLoop]: 4445 mSDtfsCounter, 4839 mSDsluCounter, 16925 mSDsCounter, 0 mSdLazyCounter, 1422 mSolverCounterSat, 79 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4857 SdHoareTripleChecker+Valid, 21370 SdHoareTripleChecker+Invalid, 1501 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 79 IncrementalHoareTripleChecker+Valid, 1422 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:04,675 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4857 Valid, 21370 Invalid, 1501 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [79 Valid, 1422 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:22:04,689 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 10694 states. [2021-11-20 07:22:05,208 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 10694 to 8153. [2021-11-20 07:22:05,218 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 8153 states, 7500 states have (on average 1.6208) internal successors, (12156), 7535 states have internal predecessors, (12156), 421 states have call successors, (421), 199 states have call predecessors, (421), 230 states have return successors, (694), 450 states have call predecessors, (694), 419 states have call successors, (694) [2021-11-20 07:22:05,248 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 8153 states to 8153 states and 13271 transitions. [2021-11-20 07:22:05,249 INFO L78 Accepts]: Start accepts. Automaton has 8153 states and 13271 transitions. Word has length 102 [2021-11-20 07:22:05,249 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:05,249 INFO L470 AbstractCegarLoop]: Abstraction has 8153 states and 13271 transitions. [2021-11-20 07:22:05,249 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:05,250 INFO L276 IsEmpty]: Start isEmpty. Operand 8153 states and 13271 transitions. [2021-11-20 07:22:05,257 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:22:05,257 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:05,258 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:05,258 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable8 [2021-11-20 07:22:05,258 INFO L402 AbstractCegarLoop]: === Iteration 10 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:05,259 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:05,259 INFO L85 PathProgramCache]: Analyzing trace with hash -1037015562, now seen corresponding path program 1 times [2021-11-20 07:22:05,259 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:05,259 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [115217220] [2021-11-20 07:22:05,260 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:05,260 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:05,269 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:05,284 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:05,286 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:05,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:05,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:05,343 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:05,348 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:05,358 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:05,360 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:05,364 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:05,365 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:05,368 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:05,368 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:05,368 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [115217220] [2021-11-20 07:22:05,368 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [115217220] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:05,368 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:05,369 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:22:05,369 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1090745177] [2021-11-20 07:22:05,369 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:05,370 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:22:05,370 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:05,370 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:22:05,370 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=11, Invalid=31, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:22:05,371 INFO L87 Difference]: Start difference. First operand 8153 states and 13271 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:07,934 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:07,934 INFO L93 Difference]: Finished difference Result 24375 states and 38476 transitions. [2021-11-20 07:22:07,935 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 15 states. [2021-11-20 07:22:07,935 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:22:07,935 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:08,008 INFO L225 Difference]: With dead ends: 24375 [2021-11-20 07:22:08,008 INFO L226 Difference]: Without dead ends: 18356 [2021-11-20 07:22:08,036 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 30 GetRequests, 15 SyntacticMatches, 0 SemanticMatches, 15 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 45 ImplicationChecksByTransitivity, 0.3s TimeCoverageRelationStatistics Valid=73, Invalid=199, Unknown=0, NotChecked=0, Total=272 [2021-11-20 07:22:08,037 INFO L933 BasicCegarLoop]: 4438 mSDtfsCounter, 4802 mSDsluCounter, 16925 mSDsCounter, 0 mSdLazyCounter, 1411 mSolverCounterSat, 82 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 1.1s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4820 SdHoareTripleChecker+Valid, 21363 SdHoareTripleChecker+Invalid, 1493 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 82 IncrementalHoareTripleChecker+Valid, 1411 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.2s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:08,038 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4820 Valid, 21363 Invalid, 1493 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [82 Valid, 1411 Invalid, 0 Unknown, 0 Unchecked, 1.2s Time] [2021-11-20 07:22:08,055 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 18356 states. [2021-11-20 07:22:08,878 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 18356 to 13930. [2021-11-20 07:22:08,904 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13930 states, 12685 states have (on average 1.5828143476547103) internal successors, (20078), 12752 states have internal predecessors, (20078), 789 states have call successors, (789), 391 states have call predecessors, (789), 454 states have return successors, (1580), 850 states have call predecessors, (1580), 787 states have call successors, (1580) [2021-11-20 07:22:08,949 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13930 states to 13930 states and 22447 transitions. [2021-11-20 07:22:08,949 INFO L78 Accepts]: Start accepts. Automaton has 13930 states and 22447 transitions. Word has length 102 [2021-11-20 07:22:08,950 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:08,950 INFO L470 AbstractCegarLoop]: Abstraction has 13930 states and 22447 transitions. [2021-11-20 07:22:08,950 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:08,950 INFO L276 IsEmpty]: Start isEmpty. Operand 13930 states and 22447 transitions. [2021-11-20 07:22:08,964 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:22:08,964 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:08,965 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:08,965 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable9 [2021-11-20 07:22:08,965 INFO L402 AbstractCegarLoop]: === Iteration 11 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:08,966 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:08,966 INFO L85 PathProgramCache]: Analyzing trace with hash -1009949960, now seen corresponding path program 1 times [2021-11-20 07:22:08,966 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:08,966 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [944391484] [2021-11-20 07:22:08,966 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:08,967 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:08,985 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:09,005 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:09,006 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:09,026 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:09,028 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:09,061 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:09,068 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:09,075 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:09,085 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:09,088 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:09,089 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:09,091 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:09,092 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:09,092 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [944391484] [2021-11-20 07:22:09,092 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [944391484] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:09,092 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:09,092 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [7] imperfect sequences [] total 7 [2021-11-20 07:22:09,093 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1758644250] [2021-11-20 07:22:09,093 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:09,093 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 7 states [2021-11-20 07:22:09,093 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:09,094 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 7 interpolants. [2021-11-20 07:22:09,094 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=12, Invalid=30, Unknown=0, NotChecked=0, Total=42 [2021-11-20 07:22:09,094 INFO L87 Difference]: Start difference. First operand 13930 states and 22447 transitions. Second operand has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:10,766 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:10,766 INFO L93 Difference]: Finished difference Result 28753 states and 46200 transitions. [2021-11-20 07:22:10,766 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 7 states. [2021-11-20 07:22:10,767 INFO L78 Accepts]: Start accepts. Automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:22:10,767 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:10,832 INFO L225 Difference]: With dead ends: 28753 [2021-11-20 07:22:10,832 INFO L226 Difference]: Without dead ends: 16957 [2021-11-20 07:22:10,874 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 20 GetRequests, 11 SyntacticMatches, 0 SemanticMatches, 9 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 8 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=36, Invalid=74, Unknown=0, NotChecked=0, Total=110 [2021-11-20 07:22:10,875 INFO L933 BasicCegarLoop]: 4253 mSDtfsCounter, 4516 mSDsluCounter, 16350 mSDsCounter, 0 mSdLazyCounter, 664 mSolverCounterSat, 75 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.5s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4529 SdHoareTripleChecker+Valid, 20603 SdHoareTripleChecker+Invalid, 739 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 75 IncrementalHoareTripleChecker+Valid, 664 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.6s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:10,876 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4529 Valid, 20603 Invalid, 739 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [75 Valid, 664 Invalid, 0 Unknown, 0 Unchecked, 0.6s Time] [2021-11-20 07:22:10,891 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 16957 states. [2021-11-20 07:22:11,712 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 16957 to 13930. [2021-11-20 07:22:11,730 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 13930 states, 12685 states have (on average 1.577690185258179) internal successors, (20013), 12752 states have internal predecessors, (20013), 789 states have call successors, (789), 391 states have call predecessors, (789), 454 states have return successors, (1580), 850 states have call predecessors, (1580), 787 states have call successors, (1580) [2021-11-20 07:22:11,775 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 13930 states to 13930 states and 22382 transitions. [2021-11-20 07:22:11,776 INFO L78 Accepts]: Start accepts. Automaton has 13930 states and 22382 transitions. Word has length 102 [2021-11-20 07:22:11,776 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:11,777 INFO L470 AbstractCegarLoop]: Abstraction has 13930 states and 22382 transitions. [2021-11-20 07:22:11,777 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 7 states, 7 states have (on average 13.0) internal successors, (91), 5 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:11,777 INFO L276 IsEmpty]: Start isEmpty. Operand 13930 states and 22382 transitions. [2021-11-20 07:22:11,790 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 103 [2021-11-20 07:22:11,790 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:11,790 INFO L514 BasicCegarLoop]: trace histogram [1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:11,791 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable10 [2021-11-20 07:22:11,791 INFO L402 AbstractCegarLoop]: === Iteration 12 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:11,791 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:11,791 INFO L85 PathProgramCache]: Analyzing trace with hash 724154490, now seen corresponding path program 1 times [2021-11-20 07:22:11,792 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:11,792 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1664496001] [2021-11-20 07:22:11,792 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:11,792 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:11,804 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:11,820 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:11,821 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:11,842 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:11,844 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:11,856 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:11,860 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:11,879 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:11,881 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:11,885 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:11,886 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:11,889 INFO L134 CoverageAnalysis]: Checked inductivity of 0 backedges. 0 proven. 0 refuted. 0 times theorem prover too weak. 0 trivial. 0 not checked. [2021-11-20 07:22:11,889 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:11,890 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1664496001] [2021-11-20 07:22:11,890 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1664496001] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:11,890 INFO L186 FreeRefinementEngine]: Found 1 perfect and 0 imperfect interpolant sequences. [2021-11-20 07:22:11,890 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [6] imperfect sequences [] total 6 [2021-11-20 07:22:11,890 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1269453037] [2021-11-20 07:22:11,891 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:11,891 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 6 states [2021-11-20 07:22:11,891 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:11,892 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 6 interpolants. [2021-11-20 07:22:11,892 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=9, Invalid=21, Unknown=0, NotChecked=0, Total=30 [2021-11-20 07:22:11,892 INFO L87 Difference]: Start difference. First operand 13930 states and 22382 transitions. Second operand has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:14,703 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:14,703 INFO L93 Difference]: Finished difference Result 35984 states and 56644 transitions. [2021-11-20 07:22:14,704 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 10 states. [2021-11-20 07:22:14,704 INFO L78 Accepts]: Start accepts. Automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) Word has length 102 [2021-11-20 07:22:14,704 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:14,804 INFO L225 Difference]: With dead ends: 35984 [2021-11-20 07:22:14,804 INFO L226 Difference]: Without dead ends: 24189 [2021-11-20 07:22:14,843 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 23 GetRequests, 13 SyntacticMatches, 0 SemanticMatches, 10 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 15 ImplicationChecksByTransitivity, 0.2s TimeCoverageRelationStatistics Valid=39, Invalid=93, Unknown=0, NotChecked=0, Total=132 [2021-11-20 07:22:14,844 INFO L933 BasicCegarLoop]: 4565 mSDtfsCounter, 4925 mSDsluCounter, 12545 mSDsCounter, 0 mSdLazyCounter, 1148 mSolverCounterSat, 103 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.9s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4957 SdHoareTripleChecker+Valid, 17110 SdHoareTripleChecker+Invalid, 1251 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 103 IncrementalHoareTripleChecker+Valid, 1148 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 1.1s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:14,845 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4957 Valid, 17110 Invalid, 1251 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [103 Valid, 1148 Invalid, 0 Unknown, 0 Unchecked, 1.1s Time] [2021-11-20 07:22:14,869 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 24189 states. [2021-11-20 07:22:16,267 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 24189 to 19766. [2021-11-20 07:22:16,284 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 19766 states, 17876 states have (on average 1.5501230700380397) internal successors, (27710), 18008 states have internal predecessors, (27710), 1204 states have call successors, (1204), 589 states have call predecessors, (1204), 684 states have return successors, (2239), 1232 states have call predecessors, (2239), 1202 states have call successors, (2239) [2021-11-20 07:22:16,348 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 19766 states to 19766 states and 31153 transitions. [2021-11-20 07:22:16,350 INFO L78 Accepts]: Start accepts. Automaton has 19766 states and 31153 transitions. Word has length 102 [2021-11-20 07:22:16,350 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:16,350 INFO L470 AbstractCegarLoop]: Abstraction has 19766 states and 31153 transitions. [2021-11-20 07:22:16,351 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 6 states, 6 states have (on average 15.166666666666666) internal successors, (91), 4 states have internal predecessors, (91), 2 states have call successors, (6), 4 states have call predecessors, (6), 2 states have return successors, (5), 2 states have call predecessors, (5), 2 states have call successors, (5) [2021-11-20 07:22:16,351 INFO L276 IsEmpty]: Start isEmpty. Operand 19766 states and 31153 transitions. [2021-11-20 07:22:16,415 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 07:22:16,415 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:16,416 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:16,416 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: SelfDestructingSolverStorable11 [2021-11-20 07:22:16,416 INFO L402 AbstractCegarLoop]: === Iteration 13 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:16,417 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:16,417 INFO L85 PathProgramCache]: Analyzing trace with hash -1880616710, now seen corresponding path program 1 times [2021-11-20 07:22:16,417 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:16,417 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [627902402] [2021-11-20 07:22:16,417 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:16,418 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:16,428 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,453 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:16,454 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,471 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:16,472 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,484 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:16,491 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,533 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:16,536 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,542 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:16,543 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,546 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:22:16,550 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,555 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 07:22:16,557 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,562 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-20 07:22:16,564 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,566 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:22:16,566 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:16,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [627902402] [2021-11-20 07:22:16,567 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [627902402] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:22:16,567 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1633757942] [2021-11-20 07:22:16,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:16,568 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:22:16,568 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:22:16,569 INFO L229 MonitoredProcess]: Starting monitored process 2 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:22:16,589 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Waiting until timeout for monitored process [2021-11-20 07:22:16,717 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:16,720 INFO L263 TraceCheckSpWp]: Trace formula consists of 669 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:22:16,737 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:17,079 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 32 proven. 0 refuted. 0 times theorem prover too weak. 18 trivial. 0 not checked. [2021-11-20 07:22:17,079 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:22:17,080 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1633757942] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:17,080 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:22:17,080 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-20 07:22:17,080 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1794597192] [2021-11-20 07:22:17,080 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:17,081 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:22:17,081 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:17,081 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:22:17,081 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:17,081 INFO L87 Difference]: Start difference. First operand 19766 states and 31153 transitions. Second operand has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:22:18,853 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:18,853 INFO L93 Difference]: Finished difference Result 54681 states and 85501 transitions. [2021-11-20 07:22:18,853 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:22:18,853 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2021-11-20 07:22:18,854 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:18,984 INFO L225 Difference]: With dead ends: 54681 [2021-11-20 07:22:18,984 INFO L226 Difference]: Without dead ends: 37050 [2021-11-20 07:22:19,038 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:19,039 INFO L933 BasicCegarLoop]: 4328 mSDtfsCounter, 4202 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4202 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:19,040 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4202 Valid, 4613 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:22:19,076 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 37050 states. [2021-11-20 07:22:21,130 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 37050 to 36850. [2021-11-20 07:22:21,155 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 36850 states, 33128 states have (on average 1.5291898092248248) internal successors, (50659), 33389 states have internal predecessors, (50659), 2352 states have call successors, (2352), 1177 states have call predecessors, (2352), 1368 states have return successors, (4361), 2347 states have call predecessors, (4361), 2350 states have call successors, (4361) [2021-11-20 07:22:21,256 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 36850 states to 36850 states and 57372 transitions. [2021-11-20 07:22:21,258 INFO L78 Accepts]: Start accepts. Automaton has 36850 states and 57372 transitions. Word has length 165 [2021-11-20 07:22:21,259 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:21,259 INFO L470 AbstractCegarLoop]: Abstraction has 36850 states and 57372 transitions. [2021-11-20 07:22:21,259 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 44.666666666666664) internal successors, (134), 2 states have internal predecessors, (134), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:22:21,259 INFO L276 IsEmpty]: Start isEmpty. Operand 36850 states and 57372 transitions. [2021-11-20 07:22:21,339 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 07:22:21,339 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:21,340 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:21,379 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (2)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:21,565 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 2 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable12 [2021-11-20 07:22:21,566 INFO L402 AbstractCegarLoop]: === Iteration 14 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:21,566 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:21,566 INFO L85 PathProgramCache]: Analyzing trace with hash 1353738266, now seen corresponding path program 1 times [2021-11-20 07:22:21,566 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:21,566 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [1959640560] [2021-11-20 07:22:21,567 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:21,567 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:21,579 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,606 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:21,607 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,627 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:21,629 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,642 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:21,648 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,692 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:21,694 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,698 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:21,700 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,701 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:22:21,706 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,714 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 07:22:21,715 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,721 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-20 07:22:21,724 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,726 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:22:21,727 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [1959640560] [2021-11-20 07:22:21,727 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [1959640560] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:22:21,727 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [386396007] [2021-11-20 07:22:21,727 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:21,727 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:22:21,728 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:22:21,729 INFO L229 MonitoredProcess]: Starting monitored process 3 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:22:21,748 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Waiting until timeout for monitored process [2021-11-20 07:22:21,869 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:21,871 INFO L263 TraceCheckSpWp]: Trace formula consists of 663 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:22:21,877 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:22,255 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 14 proven. 0 refuted. 0 times theorem prover too weak. 36 trivial. 0 not checked. [2021-11-20 07:22:22,255 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:22:22,255 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [386396007] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:22,256 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:22:22,256 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-20 07:22:22,259 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1229229659] [2021-11-20 07:22:22,259 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:22,260 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:22:22,260 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:22,260 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:22:22,260 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:22,261 INFO L87 Difference]: Start difference. First operand 36850 states and 57372 transitions. Second operand has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:22:25,924 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:25,924 INFO L93 Difference]: Finished difference Result 105587 states and 164174 transitions. [2021-11-20 07:22:25,924 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:22:25,925 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2021-11-20 07:22:25,925 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:26,117 INFO L225 Difference]: With dead ends: 105587 [2021-11-20 07:22:26,117 INFO L226 Difference]: Without dead ends: 70872 [2021-11-20 07:22:26,374 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:26,375 INFO L933 BasicCegarLoop]: 4284 mSDtfsCounter, 4220 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4220 SdHoareTripleChecker+Valid, 4569 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:26,376 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4220 Valid, 4569 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:22:26,436 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 70872 states. [2021-11-20 07:22:30,402 INFO L88 GeneralOperation]: Finished minimizeSevpa. Reduced states from 70872 to 70476. [2021-11-20 07:22:30,445 INFO L82 GeneralOperation]: Start removeUnreachable. Operand has 70476 states, 63140 states have (on average 1.5168039277795375) internal successors, (95771), 63659 states have internal predecessors, (95771), 4598 states have call successors, (4598), 2353 states have call predecessors, (4598), 2736 states have return successors, (8555), 4527 states have call predecessors, (8555), 4596 states have call successors, (8555) [2021-11-20 07:22:30,658 INFO L88 GeneralOperation]: Finished removeUnreachable. Reduced from 70476 states to 70476 states and 108924 transitions. [2021-11-20 07:22:30,662 INFO L78 Accepts]: Start accepts. Automaton has 70476 states and 108924 transitions. Word has length 165 [2021-11-20 07:22:30,663 INFO L84 Accepts]: Finished accepts. word is rejected. [2021-11-20 07:22:30,663 INFO L470 AbstractCegarLoop]: Abstraction has 70476 states and 108924 transitions. [2021-11-20 07:22:30,663 INFO L471 AbstractCegarLoop]: INTERPOLANT automaton has has 3 states, 3 states have (on average 38.666666666666664) internal successors, (116), 2 states have internal predecessors, (116), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:22:30,663 INFO L276 IsEmpty]: Start isEmpty. Operand 70476 states and 108924 transitions. [2021-11-20 07:22:31,032 INFO L282 IsEmpty]: Finished isEmpty. Found accepting run of length 166 [2021-11-20 07:22:31,032 INFO L506 BasicCegarLoop]: Found error trace [2021-11-20 07:22:31,033 INFO L514 BasicCegarLoop]: trace histogram [2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 2, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1, 1] [2021-11-20 07:22:31,068 INFO L540 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (3)] Forceful destruction successful, exit code 0 [2021-11-20 07:22:31,257 WARN L452 AbstractCegarLoop]: Destroyed unattended storables created during the last iteration: 3 /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true,SelfDestructingSolverStorable13 [2021-11-20 07:22:31,258 INFO L402 AbstractCegarLoop]: === Iteration 15 === Targeting errorErr0ASSERT_VIOLATIONERROR_FUNCTION === [ULTIMATE.startErr0ASSERT_VIOLATIONERROR_FUNCTION, errorErr0ASSERT_VIOLATIONERROR_FUNCTION] === [2021-11-20 07:22:31,258 INFO L144 PredicateUnifier]: Initialized classic predicate unifier [2021-11-20 07:22:31,258 INFO L85 PathProgramCache]: Analyzing trace with hash 201144122, now seen corresponding path program 1 times [2021-11-20 07:22:31,258 INFO L121 FreeRefinementEngine]: Executing refinement strategy CAMEL [2021-11-20 07:22:31,258 INFO L333 FreeRefinementEngine]: Using trace check IpTcStrategyModuleSmtInterpolCraig [957824496] [2021-11-20 07:22:31,259 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:31,259 INFO L126 SolverBuilder]: Constructing new instance of SMTInterpol with explicit timeout -1 ms and remaining time -1 ms [2021-11-20 07:22:31,268 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,286 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 4 [2021-11-20 07:22:31,287 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,306 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 15 [2021-11-20 07:22:31,308 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,320 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 30 [2021-11-20 07:22:31,325 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,368 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 69 [2021-11-20 07:22:31,370 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,374 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 87 [2021-11-20 07:22:31,375 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,378 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 100 [2021-11-20 07:22:31,383 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,392 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 0 [2021-11-20 07:22:31,394 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,400 INFO L376 atingTraceCheckCraig]: Compute interpolants for subsequence at non-pending call position 150 [2021-11-20 07:22:31,402 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,405 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 0 proven. 35 refuted. 0 times theorem prover too weak. 15 trivial. 0 not checked. [2021-11-20 07:22:31,405 INFO L139 FreeRefinementEngine]: Strategy CAMEL found an infeasible trace [2021-11-20 07:22:31,405 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleSmtInterpolCraig [957824496] [2021-11-20 07:22:31,405 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleSmtInterpolCraig [957824496] provided 0 perfect and 1 imperfect interpolant sequences [2021-11-20 07:22:31,406 INFO L333 FreeRefinementEngine]: Using interpolant generator IpTcStrategyModuleZ3 [1784778990] [2021-11-20 07:22:31,406 INFO L95 rtionOrderModulation]: Keeping assertion order NOT_INCREMENTALLY [2021-11-20 07:22:31,406 INFO L168 SolverBuilder]: Constructing external solver with command: z3 -smt2 -in SMTLIB2_COMPLIANT=true [2021-11-20 07:22:31,406 INFO L189 MonitoredProcess]: No working directory specified, using /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 [2021-11-20 07:22:31,407 INFO L229 MonitoredProcess]: Starting monitored process 4 with /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (exit command is (exit), workingDir is null) [2021-11-20 07:22:31,432 INFO L327 MonitoredProcess]: [MP /tmp/vcloud_worker_vcloud-master_on_vcloud-master/run_dir_76c7545d-ebcf-43e6-8f2e-1f86b88cc837/bin/uautomizer-DQz5hQGWxF/z3 -smt2 -in SMTLIB2_COMPLIANT=true (4)] Waiting until timeout for monitored process [2021-11-20 07:22:31,551 INFO L136 AnnotateAndAsserter]: Conjunction of SSA is unsat [2021-11-20 07:22:31,554 INFO L263 TraceCheckSpWp]: Trace formula consists of 657 conjuncts, 2 conjunts are in the unsatisfiable core [2021-11-20 07:22:31,560 INFO L286 TraceCheckSpWp]: Computing forward predicates... [2021-11-20 07:22:31,857 INFO L134 CoverageAnalysis]: Checked inductivity of 50 backedges. 20 proven. 0 refuted. 0 times theorem prover too weak. 30 trivial. 0 not checked. [2021-11-20 07:22:31,857 INFO L324 TraceCheckSpWp]: Omiting computation of backward sequence because forward sequence was already perfect [2021-11-20 07:22:31,858 INFO L160 FreeRefinementEngine]: IpTcStrategyModuleZ3 [1784778990] provided 1 perfect and 0 imperfect interpolant sequences [2021-11-20 07:22:31,858 INFO L186 FreeRefinementEngine]: Found 1 perfect and 1 imperfect interpolant sequences. [2021-11-20 07:22:31,858 INFO L199 FreeRefinementEngine]: Number of different interpolants: perfect sequences [2] imperfect sequences [7] total 8 [2021-11-20 07:22:31,858 INFO L115 tionRefinementEngine]: Using interpolant automaton builder IpAbStrategyModuleStraightlineAll [1721072102] [2021-11-20 07:22:31,859 INFO L85 oduleStraightlineAll]: Using 1 perfect interpolants to construct interpolant automaton [2021-11-20 07:22:31,859 INFO L546 AbstractCegarLoop]: INTERPOLANT automaton has 3 states [2021-11-20 07:22:31,859 INFO L103 FreeRefinementEngine]: Using predicate unifier PredicateUnifier provided by strategy CAMEL [2021-11-20 07:22:31,860 INFO L143 InterpolantAutomaton]: Constructing interpolant automaton starting with 3 interpolants. [2021-11-20 07:22:31,860 INFO L145 InterpolantAutomaton]: CoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:31,860 INFO L87 Difference]: Start difference. First operand 70476 states and 108924 transitions. Second operand has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) [2021-11-20 07:22:39,113 INFO L144 Difference]: Subtrahend was deterministic. Have not used determinization. [2021-11-20 07:22:39,113 INFO L93 Difference]: Finished difference Result 205197 states and 317852 transitions. [2021-11-20 07:22:39,114 INFO L141 InterpolantAutomaton]: Switched to read-only mode: deterministic interpolant automaton has 3 states. [2021-11-20 07:22:39,114 INFO L78 Accepts]: Start accepts. Automaton has has 3 states, 3 states have (on average 40.666666666666664) internal successors, (122), 2 states have internal predecessors, (122), 2 states have call successors, (8), 2 states have call predecessors, (8), 2 states have return successors, (7), 2 states have call predecessors, (7), 2 states have call successors, (7) Word has length 165 [2021-11-20 07:22:39,114 INFO L84 Accepts]: Finished accepts. some prefix is accepted. [2021-11-20 07:22:39,559 INFO L225 Difference]: With dead ends: 205197 [2021-11-20 07:22:39,559 INFO L226 Difference]: Without dead ends: 136856 [2021-11-20 07:22:39,916 INFO L932 BasicCegarLoop]: 0 DeclaredPredicates, 186 GetRequests, 180 SyntacticMatches, 0 SemanticMatches, 6 ConstructedPredicates, 0 IntricatePredicates, 0 DeprecatedPredicates, 0 ImplicationChecksByTransitivity, 0.1s TimeCoverageRelationStatistics Valid=13, Invalid=43, Unknown=0, NotChecked=0, Total=56 [2021-11-20 07:22:39,917 INFO L933 BasicCegarLoop]: 4328 mSDtfsCounter, 4214 mSDsluCounter, 285 mSDsCounter, 0 mSdLazyCounter, 10 mSolverCounterSat, 2 mSolverCounterUnsat, 0 mSolverCounterUnknown, 0 mSolverCounterNotChecked, 0.0s Time, 0 mProtectedPredicate, 0 mProtectedAction, 4214 SdHoareTripleChecker+Valid, 4613 SdHoareTripleChecker+Invalid, 12 SdHoareTripleChecker+Unknown, 0 SdHoareTripleChecker+Unchecked, 0.0s SdHoareTripleChecker+Time, 2 IncrementalHoareTripleChecker+Valid, 10 IncrementalHoareTripleChecker+Invalid, 0 IncrementalHoareTripleChecker+Unknown, 0 IncrementalHoareTripleChecker+Unchecked, 0.0s IncrementalHoareTripleChecker+Time [2021-11-20 07:22:39,918 INFO L934 BasicCegarLoop]: SdHoareTripleChecker [4214 Valid, 4613 Invalid, 12 Unknown, 0 Unchecked, 0.0s Time], IncrementalHoareTripleChecker [2 Valid, 10 Invalid, 0 Unknown, 0 Unchecked, 0.0s Time] [2021-11-20 07:22:40,020 INFO L82 GeneralOperation]: Start minimizeSevpa. Operand 136856 states.